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Plumbinq Sewer and Drainaqe Investiqation Report <br /> Investiqation Company: <br /> Seattle Drain Service <br /> 1820 North 48`" Street <br /> Seattle, WA 98103 <br /> (206) 632-8069 <br /> Subiect Property: <br /> 1112 Grand Ave. <br /> Everett WA 98201 <br /> � <br /> Frontofhouse <br /> House Speci(ics <br /> • Is there currently a backwater valve at this location� No <br /> • Is there currently a clean out on the side sewer Yes <br /> • How many at risk plumbing fixturPs below the road surface are there 3 One FD, <br /> One sink, one washer. <br /> . How many down spouts are currently connecled to the sewer: 4 <br /> • Does side sewer have slope: After 39' it has grade, prior no il has a belly <br /> • Depth of side sewer 10ft from house: NA <br /> • Depth of side sewer at proposed BNV valve installation spot) 4' 6" <br /> • Additional cornments: Sewer has a low spol "belly" 39' out from cleanout <br /> Problems Identified <br /> 1) House is not prolecled from backflow dunng a sewer surcharge event. <br /> Solution: Install a backwater valve at location specified below. <br /> 2) Flat reverse grade sewer from the clean out to 39' out downstream <br /> Solution Excavate and set grade by hand could be done when BW valve is being <br /> installed <br />